一个不错的java的配置文件的设置

package property;



import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.net.URL;

import java.util.Properties;



public class AppConfig {

    private static File proFile = null;



    static {

        String className = AppConfig.class.getName();



        String classNamePath = className.replace(".", "/") + ".class";



        URL is = AppConfig.class.getClassLoader().getResource(classNamePath);



        String path = is.getFile();

        File file = new File(path);

        proFile = new File(file.getParent() + File.separator + "test.property");

    }



    public boolean containsProperty(String key) {

        Properties props = getProperties();

        return props.containsKey(key);

    }



    

    /**

     * 得到所有的配置

     * 

     * @return

     */

    public Properties get() {

        FileInputStream fis = null;

        Properties props = new Properties();

        try {



            fis = new FileInputStream(proFile);

            props.load(fis);

        } catch (Exception e) {

        } finally {

            try {

                fis.close();

            } catch (Exception e) {

            }

        }

        return props;

    }



    public String get(String key) {

        Properties props = get();

        return (props != null) ? props.getProperty(key) : null;

    }



    public Properties getProperties() {

        return get();

    }



    /**

     * 得到cookie

     * 

     * @param key

     * @return

     */

    public String getProperty(String key) {

        return get(key);

    }



    /**

     * 删除配置文件

     * 

     * @param key

     */

    public void remove(String... key) {

        Properties props = get();

        for (String k : key)

            props.remove(k);

        setProps(props);

    }



    public void removeProperty(String... key) {

        remove(key);

    }



    public void set(Properties ps) {

        Properties props = get();

        props.putAll(ps);

        setProps(props);

    }



    /**

     * 相当于

     * 

     * @param key

     * @param value

     */

    public void set(String key, String value) {

        Properties props = get();

        props.setProperty(key, value);

        setProps(props);

    }



    public void setProperties(Properties ps) {

        set(ps);

    }



    public void setProperty(String key, String value) {

        set(key, value);

    }



    /**

     * 添加一个配置

     * @param p

     */

    private void setProps(Properties p) {

        FileOutputStream fos = null;

        try {

            // 把config建在files目录下

            // fos = activity.openFileOutput(APP_CONFIG, Context.MODE_PRIVATE);



            // 把config建在(自定义)app_config的目录下

            fos = new FileOutputStream(proFile);



            p.store(fos, null);

            fos.flush();

        } catch (Exception e) {

            e.printStackTrace();

        } finally {

            try {

                fos.close();

            } catch (Exception e) {

            }

        }

    }



}